ul>li{
    list-style-type: none;
    float: left;
    background-color: blueviolet;
    margin: 35px;
    font-size: 30px;
    color: white;
    text-align: center;
}
div{
    background-color: blue;
}
ul::after{
    display: block;
    content: "";
    clear: both;
}
ul{
    width: 1000px;
    margin: 0 auto;
}
.Area>div{
    background-color: green;
    height: 100px;
    width: 100px;
}
.now{
    background-color: yellow;
}